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ntrations ar <br /> table pose <br /> first line nf evidencefor vapor egressionnin be arwmpti5hed Far <br /> minnlnregroundwaterthe widen at he <br /> a ng lot mn risk. H second lineof n will involve till <br /> water soil vapor samples <br /> etableandd depths <br /> 'Th groundwater sampling ons <br /> from whether <br /> heth rFEEe is peree lnd In ocations�de cent tozone.T shallowwts tram sompl lomti� to assess <br /> six <br /> months apart are eluded inthis uaU of work. mawo Go dso ruidemmlening co msessumat <br /> mercial buildinPA <br /> same g ons will be ed in itY V as near r <br /> ETHODS <br /> 33 is INVESTIGATION <br /> po eato collient doe vapor samples at multiple depths and o zone <br /> (wiaateraeioeis <br /> unawarerhIncrease the locations shown n Figure 3. he rationale far each same <br /> s at <br /> Table 2. One additional B-zone gralegreardwater sample will be collected ad)acentto <br /> provided d3A (figure 21 and a groundwater sample Is proposed to be collected from <br /> CM`owned B-zo <br /> one moni oring well W-A (Figure 2). If Etta are foun(Tabltl above applicable groundwater Exits <br /> well W-g, then will bec constructed well W-e. <br /> ft the <br /> ,lep,) int ampleown in Figuren n2, hydraulicoalY dow aradient(northwest) of monitoring <br /> The investg n methods are escried then o Below. <br /> 3.3.3 Preparation for sampling <br /> o the start of Held activities, Ha "sk Aldrich will update the Site-spedre Kean and safety Plan, <br /> cess <br /> obtain soil boring pemltsfmm San Form qulnC f ra EnvironmenmlH Health Uep Coo and <br /> entrenchment Faced homoe city of Bipon far anYworkpenned n the pubii'crtra on01fawaYc <br /> contract with a ut'Ieylocatlon zuhco coNrhrtdrilliconcutai subcontractor, andnotigry Undergro <br /> AldriNHwillm of field work. Pl oaµvata oohne <br /> bri <br /> still be suee[eel nrutillte�hy�a til tloaer abl2 tlepM approximatelyllyoeach oneweekhe <br /> B zone monitoringTotal collie lls min gabero eWat <br /> grant to collecting teptl+dis o undwmersa <br /> 332 Groundwater sampling Methods <br /> Haley & Aldrich will subcompact with a Capherega-licensed drilling company to complete depth-discrete <br /> groundwater sampint at ten local ig well: hl MH5B M groundwater0B M 18g nd M Side) since Mm not ega <br /> wells <br /> samPle^dtIIIthe quarter 2019 as aof theg unawarePrograma from <br /> t nsecon m nested by Fee Board arth of u-53B, gavemarderda <br /> second will be used locatio <br /> a depth-discretegroundwateram <br /> nearby M-side coal be tided m eeu P <br /> A hand auger Will be used to Near the uppers net of each boring for unberproonn autiilmiees prior to <br /> advancing each buying. A depthdfi�rete grab groundwater sample will <br /> groundwater sampling Had advanced with Direct push drilling equipment <br /> unschw or <br /> yrackPbanned Geoprohe 77rab 0 or simiar). Each groundwater sampling location will be advanced to a <br /> target(track <br /> ` anticipated to be similar to the target depths shown in Table 2. The target groundwater <br /> sampling depth interval will be selected to include the water table Interface; be <br /> . .at measurements described in Section .3.3.1, The (ample depths er will be operedl by <br /> Eased on the <br /> back eter Icasmg approximately 5 feet o allow uppermost groundwater to entter thsamp g <br /> pullin <br /> 01CH <br />